Fallback Conditional Handover Configuration with Single Connectivity

Abstract

An apparatus including at least one processor; and at least one non-transitory memory storing instructions that, when executed with the at least one processor, cause the apparatus to: determine that a conditional handover condition is met; and based upon the determining that the conditional handover condition is met and based, at least partially, on a priority information, select a conditional handover configuration from at least one conditional handover configuration to perform a conditional handover.

What is claimed is: 
     
         1 . An apparatus comprising:
 at least one processor; and   at least one non-transitory memory storing instructions that, when executed with the at least one processor, cause the apparatus to:
 determine that a conditional handover condition is met; and 
 based upon the determining that the conditional handover condition is met and based, at least partially, on a priority information, select a conditional handover configuration from at least one conditional handover configuration to perform a conditional handover. 
   
     
     
         2 . The apparatus as claimed in  claim 1  where the at least one memory and the instructions are configured to, with the at least one processor, cause the apparatus to receive handover information from a network entity, where the handover information comprises one or more of conditional handover configuration information, measurement configuration information and conditional handover priority information, where the conditional handover priority information comprises the priority information. 
     
     
         3 . The apparatus as claimed in  claim 2  where the conditional handover priority information comprises information indicating that priority is to be given to a first conditional handover configuration relative to a second conditional handover configuration. 
     
     
         4 . The apparatus as claimed in  claim 1  where the priority information is indicated as being dependent upon at least one parameter. 
     
     
         5 . The apparatus as claimed in  claim 4  where the at least one parameter comprises when PSCell access condition determination is running, and the PSCell access condition has not been met. 
     
     
         6 . The apparatus as claimed in  claim 5  where the at least one memory and the instructions are configured to, with the at least one processor, cause the apparatus to prioritize a different conditional handover configuration while the PSCell access condition is running and has not been met. 
     
     
         7 . The apparatus as claimed in  claim 6  where the at least one memory and the instructions are configured to, with the at least one processor, cause the apparatus to execute the different conditional handover configuration after the PSCell condition is met. 
     
     
         8 . The apparatus as claimed in  claim 1  where the at least one memory and the instructions are configured to, with the at least one processor, cause the apparatus to receive, from a network entity, a plurality of conditional handover conditions, and the determining that the conditional handover condition is met is based upon at least one of the received plurality of conditional handover conditions. 
     
     
         9 . The apparatus as claimed in  claim 8  where the priority information comprises priority information pre-configured in the apparatus. 
     
     
         10 . The apparatus as claimed in  claim 4  where the at least one parameter comprises when only a CHO condition 1 holds. 
     
     
         11 . The apparatus as claimed in  claim 4  where the at least one parameter comprises when only a PCell condition holds. 
     
     
         12 . The apparatus as claimed in  claim 4  where the at least one memory and the instructions are configured to, with the at least one processor, cause the apparatus to prioritize single connectivity if a PCell condition is present. 
     
     
         13 . The apparatus as claimed in  claim 4  where the at least one memory and the instructions are configured to, with the at least one processor, cause the apparatus to select a first one of at least two conditional handover configurations, with the first conditional handover configuration being prioritized over other one(s) of the at least two conditional handover configurations, when a PSCell access condition is running in the apparatus. 
     
     
         14 . The apparatus as claimed in  claim 13  where the at least one memory and the instructions are configured to, with the at least one processor, cause the apparatus to select and execute the first conditional handover or a different one of the at least two conditional handover configurations based upon the priority information and when the PSCell condition is met. 
     
     
         15 . The apparatus as claimed in  claim 1 , where the at least one memory and the instructions are configured to, with the at least one processor, cause the apparatus to provide a capability indication to a network node, indicating to support conditional handover which includes priority information. 
     
     
         16 . A method comprising:
 determining that a conditional handover condition is met by a user equipment; and   based upon the determining that the conditional handover condition is met and based, at least partially, on a priority information, selecting by the user equipment a conditional handover configuration from at least one conditional handover configuration to perform a conditional handover.   
     
     
         17 . A non-transitory program storage device readable by an apparatus, tangibly embodying a program of instructions executable with the apparatus for performing operations, the operations comprising:
 determining that a conditional handover condition is met; and   based upon the determining that the conditional handover condition is met and based, at least partially, on a priority information, selecting a conditional handover configuration from at least one conditional handover configuration to perform a conditional handover.   
     
     
         18 . An apparatus comprising:
 at least one processor; and   at least one non-transitory memory storing instructions that, when executed with the at least one processor, cause the apparatus to:   receive handover information;   based, at least partially, upon the receiving of the handover information, send the handover information to a user equipment with conditional handover priority information.   
     
     
         19 . The apparatus as claimed in  claim 18  where the at least one memory and the instructions are configured to, with the at least one processor, cause the apparatus to form the conditional handover priority information with at least one parameter for use in prioritizing a first conditional handover configuration over a second conditional handover configuration. 
     
     
         20 . The apparatus as claimed in  claim 19  where the at least one parameter comprises when a PSCell access condition is about to be met. 
     
     
         21 . The apparatus as claimed in  claim 20  where the at least one parameter comprises whether a timer time-to-trigger (TTT) of the PSCell access condition is running. 
     
     
         22 . The apparatus as claimed in  claim 20  where the at least one parameter comprises to wait with conditional handover configuration selection until expiry or stop of a timer time-to-trigger (TTT) of the PSCell. 
     
     
         23 . The apparatus as claimed in  claim 19  where the at least one parameter comprises when a first conditional handover condition exists and at least one other conditional handover condition does not exist. 
     
     
         24 . The apparatus as claimed in  claim 18  where the instructions are configured to, with the at least one processor, cause the apparatus to receive a capability indicator from the user equipment to configure or instruct the user equipment regarding at least one of:
 priority information, or 
 wait for expiry of a running timer time-to-trigger. 
 
     
     
         25 . A method comprising:
 receiving handover information comprising measurement configuration information; and   based, at least partially, upon the receiving of the handover information, sending the handover information to a user equipment with conditional handover priority information.   
     
     
         26 . A non-transitory program storage device readable by an apparatus, tangibly embodying a program of instructions executable with the apparatus for performing operations, the operations comprising:
 receiving handover information comprising measurement configuration information; and   based, at least partially, upon the receiving of the handover information, sending the handover information to a user equipment with conditional handover priority information.